全球及各地震区带强震活动周期特征  

The global and sub-zone period characteristics for large earthquakes

作　　者：宋治平[1] 尹继尧[2] 薛艳[1] 张国民[3] 刘杰[1] 朱元清[4] 张永仙[1] 

机构地区：[1]中国地震台网中心,北京100045 [2]中国石油新疆油田公司,克拉玛依834000 [3]中国地震局地震预测研究所,北京100036 [4]上海市地震局,上海200062

出　　处：《地球物理学报》2013年第6期1868-1876,共9页Chinese Journal of Geophysics

基　　金：国家重点基础研究发展计划“973”项目(2008CB425704)资助

摘　　要：基于地震活动周期谱的Morlet小波分析,确定了全球和13个地震区带的强震活动周期及其置信度.结果显示全球地震活动存在着多个显著稳定的活动周期,而各地震区带除了存在着与全球整体地震活动基本一致的周期外,还存在着特有的活动周期成分.本文研究为探讨全球及区域强震活动趋势及其动力源提供了基础数据.Based on the Morlet wavelet analysis of the seismic period spectrum, periods and their confidence degrees of large earthquakes were determined globally and for 13 seismic zones as well. The results show that multiple significantly steady seismic periods exist for global seismicity, while for various seismic zones, special periods exist in addition to the global periods. This study provides basic data for investigating the global and regional trends as well as the driving forces of large earthquakes.

关 键 词：全球及地震区带地震活动 地震活动周期特征 小波分析 显著性检验 

分 类 号：P315[天文地球—地震学]